For sale is a brand new, never used, genuine and authentic
David Yurman Heirloom Classic Signet Ring in Black Jade
-It lists for $450
-Size 12
-Beautiful approximately 9mm x 14mm Black Jade stone 
-Approximately 0.55" at front, tapering to approximately 0.2" at back
-Inside is marked with  "(c)DY 925"  
-The ring comes in a David Yurman gift box with a David Yurman Pouch, polishing cloth, and certificate of authenticity.
-I ship for free with USPS priority mail with insurance.  I also offer express service for $15.